
Description: Kiax is an open-source, cross-platform VoIP software for making audio or video calls over the internet. It supports common protocols like SIP and IAX and features HD audio/video, call recording, SMS support, conference calls, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Voipbuster is a free VoIP service that allows users to make free calls to landlines and mobile phones around the world. It offers low-cost international calling by using a VoIP connection to route calls over the internet.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API